United States Patent 2746486
Inventors:
Louis, Gratzmuller Jean
Publication Date:
05/22/1956
Assignee:
Louis, Gratzmuller Jean
Other Classes:
220/327, 411/305, 285/354, 285/334.400, 285/917, 123/169R, 285/363, 285/382, 285/110, 220/304, 285/383
International Classes:
F16J15/04; F16L15/00; F16L15/06; F16L17/06; F16J15/02; F16L17/00